package com.hzy.utils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.InputStream;

/**
 * @Package: cn.cvs.utils
 * @ClassName: MybatisUtil
 * @Author: 862982795
 * @CreateTime: 2021/06/11 10:44
 * a@Description:
 */
public class MybatisUtil {
    private static final SqlSessionFactory factory;

    static { // 通过静态代码块，唯一一次创建SqlSessionFactory实例
        try {
            InputStream is = Resources.getResourceAsStream("mybatis-config.xml");
            factory = new SqlSessionFactoryBuilder().build(is);
        } catch (Exception e) {
            throw new RuntimeException("初始化失败", e);
        }
    }

    //创建并返回SqlSession实例
    public static SqlSession createSqlSession() {
        return factory.openSession(true);  //开启自动提交开启事务
    }

    //关闭SqlSession
    public static void closeSqlSession(SqlSession sqlSession) {
        if (sqlSession != null) {
            sqlSession.close();
        }
    }
}
